US Bridges

Ni Cnty RD 6 over Hungry Hollow

GoodPosted for load

Niobrara County, Wyoming · 6 MI W. of Mule Crk JCT · Structure no. EFF

Built
1983
42 years old, rebuilt 1991
Condition
Good
inspected November 2024
Type
Channel Beam
Concrete
Length
40 ft
1 main span
Daily traffic
33
2024 count
Owner
County
County Highway Agency

About this bridge

Ni Cnty RD 6 over Hungry Hollow is a concrete channel beam carrying Ni Cnty RD 6 over Hungry Hollow in Niobrara County, Wyoming. It was built in 1983 and reconstructed in 1991, so it is 42 years old, younger than the Wyoming average of 48.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 33 vehicles a day, roughly 21% of them trucks, projected to reach 46 by 2043. The structure is 40 ft (12.2 m) long and 21 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesNi Cnty RD 6
CrossesHungry Hollow
Location6 MI W. of Mule Crk JCT
RouteCounty Highway 6
StateWyoming
Coordinates43.3952, -104.37903
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating32.4 US tons
Inventory rating19.4 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span39 ft (11.9 m)
Deck width21 ft (6.5 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic33 (2024)
Projected traffic46 by 2043
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$39,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Ni Cnty RD 6 over Hungry Hollow built?

It was built in 1983, making it 42 years old in 2025. It was reconstructed in 1991.

What condition is Ni Cnty RD 6 over Hungry Hollow in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does Ni Cnty RD 6 over Hungry Hollow carry?

About 33 vehicles per day (2024 count), of which roughly 21% are trucks.

How long is Ni Cnty RD 6 over Hungry Hollow?

The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m) and a deck 21 ft wide.

Who owns Ni Cnty RD 6 over Hungry Hollow?

It is owned by the County Highway Agency.